What Is ROAS and How Do You Calculate It?
ROAS stands for return on ad spend, the revenue generated for every dollar spent on advertising. The formula divides total revenue from a campaign by total ad spend. A campaign that generates $4,000 in revenue from $1,000 in ad spend has a ROAS of 4, usually written as 4x or 4:1. The calculator above runs this formula for you and lets you compare results across campaigns.
What Is a Good ROAS?
A good ROAS depends heavily on your profit margin, not just the number itself. A 4x ROAS sounds strong. It can still lose money for a business with thin margins, while a 2x ROAS can be comfortably profitable for a business with high margins. Most ecommerce brands treat 4x as a reasonable baseline target, though the real benchmark that matters is covered in the next section.
Break-Even ROAS: The Number That Actually Matters
Break-even ROAS tells you the minimum return needed just to cover your costs, before a campaign becomes profitable. The formula divides 100 by your gross profit margin percentage. A business running a 25 percent margin needs a break-even ROAS of 4, since 100 divided by 25 equals 4. Anything below that ROAS loses money on every sale once ad cost is factored in, even though revenue still technically exceeds spend.
This is why a campaign can show a positive overall ROAS and still drain profit. A 3x ROAS looks healthy on the surface. For a business with a 25 percent margin, it sits below the 4x break-even point and actually costs money with every sale.
ROAS by Platform: Facebook, Google and TikTok
ROAS benchmarks shift by platform because cost per click and audience intent vary so much. Google Search campaigns often carry higher ROAS because they capture people already searching for a product. Facebook and TikTok campaigns typically run lower ROAS since they interrupt browsing rather than responding to active intent, though they often cost less per click and can still be profitable at a lower multiple.
Frequently Asked Questions
How do you calculate ROAS?
Divide total revenue generated by a campaign by the total amount spent on that campaign. The calculator above does this instantly once you enter both numbers.
What is a good ROAS?
A 4x ROAS is a common baseline for ecommerce. A business with thin margins may need much higher, while a high-margin business can stay profitable at 2x or lower.
What is break-even ROAS and why does it matter more than overall ROAS?
Break-even ROAS is the minimum return needed to cover your costs before a campaign turns a profit. Overall ROAS alone can look strong while still sitting below your actual break-even point, which means the campaign is losing money even though the numbers look positive.
How do you calculate break-even ROAS?
Divide 100 by your gross profit margin percentage. A 25 percent margin gives a break-even ROAS of 4, meaning you need at least $4 in revenue for every $1 spent just to avoid a loss.
Is a 4x ROAS good?
It depends entirely on your margin. For a business with a 25 percent margin, 4x is exactly the break-even point, not a profit. For a business with a 50 percent margin, the break-even point is only 2x, so a 4x ROAS would be comfortably profitable.
Why can a campaign have positive ROAS but still lose money?
Because ROAS alone ignores the cost of goods and other expenses tied to each sale. A campaign can generate more revenue than it spent on ads and still fall short of the break-even ROAS needed to cover production, fulfillment and overhead costs.